12399456https://www.upal.com.my/zh/feeds/jobFeedKwongwahArray ( [0] => HTTP/1.1 200 OK [1] => Date: Wed, 12 Nov 2025 02:33:55 GMT [2] => Content-Type: text/xml; charset=utf-8 [3] => Connection: close [4] => Cache-Control: no-cache, private [5] => Cache-Control: no-cache, no-store, must-revalidate [6] => Nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800} [7] => x-frame-options: SAMEORIGIN [8] => x-content-type-options: nosniff [9] => x-xss-protection: 1; mode=block [10] => referrer-policy: strict-origin-when-cross-origin [11] => permissions-policy: geolocation=(), microphone=(), camera=() [12] => content-security-policy: default-src * 'unsafe-inline' 'unsafe-eval' data: blob:; script-src * 'unsafe-inline' 'unsafe-eval' data: blob:; style-src * 'unsafe-inline' data:; img-src * data: blob:; font-src * data:; connect-src *; frame-src *; object-src *; media-src *; child-src *; [13] => Server: cloudflare [14] => x-robots-tag: noindex, nofollow, nosnippet, noarchive [15] => strict-transport-security: max-age=31536000; includeSubDomains; preload [16] => expires: Thu, 13 Nov 2025 02:33:55 GMT [17] => vary: Accept-Encoding [18] => Report-To: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=e5bJgOxzYWoLxykX2xVvFVofWDg7IU%2B0aIaFwSXO1g%2FyqMmyahJykXtYL29a%2BFFzni8VuCzh6377A5%2BCfORmbT%2Fli5TPdTjmlL%2BWV0I%3D"}]} [19] => cf-cache-status: DYNAMIC [20] => Speculation-Rules: "/cdn-cgi/speculation" [21] => Server-Timing: cfCacheStatus;desc="DYNAMIC" [22] => Server-Timing: cfEdge;dur=2,cfOrigin;dur=138 [23] => Set-Cookie: UpalLiveSession=eyJpdiI6IkVnWTc4WTc1K25lNUxCVFlFclRmZXc9PSIsInZhbHVlIjoiUUp2TVhDWEQrdjVobzNObXltWEdlTm1TdDFjdHAzRjhJa1lKVFhYWnpibFA4R3Jtdit6azQ3VVRzOHpKdnFnN1Q4dUFoc0wwajF5ejFiWHo5WUh2d1E9PSIsIm1hYyI6ImI1ZmVkZDU3YjlmMjVlYzE4NjgxMGI0MjE5NDM5MDA0YjhjMzY5MDAyZThjODkxYzlkNWNlYjI4NjkxMTEwMTQifQ%3D%3D; HttpOnly; Path=/; Max-Age=94608000; Expires=Sat, 11 Nov 2028 02:33:55 GMT [24] => CF-RAY: 99d2a096b943ace9-KUL [25] => alt-svc: h3=":443"; ma=86400 ) 789

澳洲天文学家近日在澳洲国立大学赛丁泉天文台，用天文望远镜寻找银河系附近的小星系，却意外发现一颗恒星正被超大质量黑洞逐出银河系。

该颗恒星正以每小时600万公里的速度离开，前进速度比其他恒星快10倍。

专家用口径达3.9米的英澳望远镜进行观察，发现一颗恒星正被质量比太阳大420万倍、名为人马座A*的黑洞逐出银河系。

该颗恒星距离地球2.9万光年，在500万年前已被人马座A*驱逐。不过，该恒星距逃离银河系，还有1亿年时间。

团队表示，当一个超大质量黑洞与双星系统近距离互动时，黑洞有机会将其中一颗恒星拉走，并高速地驱逐另一颗恒星。

团队指，以往也曾发现类似的超高速星，但这次发现的恒星之移动速度高得前所未见，而它也是唯一一个几乎可被确定来自银河系中心的超高速星。

此次发现亦有助为“希尔斯机制”提供证据，即描述银河系中心的超大质量黑洞会高速驱逐恒星的理论。天文学家会持续追踪该颗恒星，以观察其速度及位置。

研究报告周二（12日）刑登于《皇家天文学会月报》中。